Abstract: A multiprocessor system includes a distributed bus arbitration system in which bus arbitration takes place simultaneously on each of the multiple processors connected to the bus. Each processor has a local arbitrator of common configuration with the other local arbitrators and a dedicated request line. Each local arbitrator is connected to each dedicated request line to monitor signals on lines indicative of requests for mastership of the bus by the processors. Since each local arbitrator is of common configuration with the other local arbitrators, is operating synchronously with the other arbitrators, and is provided with a similar set of inputs, each arbitrator will arrive at the same conclusion as to which processor is to become bus master. Accordingly, an external bus arbitrator is not required and acknowledge lines are not required to communicate signals indicative of the result of the bus arbitration to the processors.